Engelhardia danumensis is a tree in the family Juglandaceae. It is named for the Danum Valley in Borneo.
Engelhardia danumensis grows up to tall, with a trunk diameter of up to, with buttresses. The bark is dark brown. The leaves are elliptic and measure up to long.
Engelhardia danumensis is endemic to Borneo, where it is known only from the Ulu Segama Forest Reserve in Sabah. Its habitat is in lowland dipterocarp forests.